High Frequency Welding ERW660 Black Steel Pipe Machinery Diameter 325-660mm API Tube Mill
Product Details
ERW660 high frequency longitudinal welded pipe production line / pipe making machine / tube mill is designed to produce welded pipes of 325mm - 660mm in OD and 6.0mm - 20mm in wall thickness, as well as corresponding square and rectangular pipe.
Usage and Technology
API pipe mill is specialized for manufacturing straight welded pipe for petroleum and gas pipelines. Taking hot-rolled steel as raw material, it produce required pipes through cold roll forming and suitable welding methods like H.F. welding, submerged arc welding and so on. The whole production line adopts ‘ZTF’ forming technology.
Technical Flow
Scroll up→ Uncoiler→ Straightening end→ Flattener→ Auto-Shear and Welding→ Horizontal Accumulator→ Strip UT→Forming(ZTF) → H.F. induction welding→ Removing external burr→ Removing inner burr→ Burnishing→ Online Detection→ Seam annealer→ Air cooling→ Water cooling→ Sizing→ Cut off→ Roll table→Flattening Test→ End-facing and chamfering→ Hydrostatic test→Off-line UT test→ Drifter→ inspection→Weighing and length measurement → Coating & Printing→ Packing→ Warehouse
Forming process
| Round pipe | Cold roll forming process | Good roller design |
| ZTF forming process | Save alt least 60% roller cost with electric control adjustment | |
| Square & rectangular tube | General round-to-square process | Stable forming process |
| Round-to-square with Turks head | Good pipe quality | |
| Process of directly square-to-square(DSS) | One set of roller can produce all tubes with electric control and automatic adjustment |
Equipment Advantages:
√ Apply to high strength steel and big thickness
√ Raw material can be steel coil and single plate
√ When producing round pipe, it can utilize ZTF forming technique
√ When producing square & rectangular tube, it can utilize directly square-square (DSS) technique
Product Parameter
| Product&yield | Round Pipe | 325mm-660mm Thickness:6.0mm-20.0mm |
| Square & rectangle tube | 250mm×250mm -500mm×500mm Thickness:6.0mm-20.0mm | |
| Length | 6m-12m Length Tolerance: ±3mm | |
| Production Speed | 20 m/min | |
| Production capacity | 180,000ton/year | |
| Consumption | Mill installed capacity | 1200 kw |
| Line Area | 350m(length) ×35m (width) | |
| worker | 6-8 workers | |
| Raw Material | Carbon steel coil & steel plate Q235B(ASTM GR·D,σs 230) & High-strength steel | |
Product Technique
Model List
| Model |
Round pipe mm |
Thickness mm |
Working spead m/min |
| ERW140 | Ф60-Ф140 | 2.0-5.0 | 60 |
| ERW165 | Ф76-Ф165 | 2.0-6.0 | 50 |
| ERW219 | Ф89-Ф219 | 2.0-8.0 | 50 |
| ERW273 | Ф114-Ф273 | 3.0-10.0 | 45 |
| ERW325 | Ф140-Ф325 | 4.0-12.7 | 40 |
| ERW377 | Ф165-Ф377 | 4.0-14.0 | 35 |
| ERW406 | Ф219-Ф406 | 6.0-16.0 | 30 |
| ERW508 | Ф273-Ф508 | 6.0-18.0 | 25 |
| ERW660 | Ф325-Ф660 | 6.0-20.0 | 20 |
| ERW720 | Ф355-Ф720 | 6.0-22.0 | 20 |
Note: We can design and manufacture pipe making machine according to customers' requirements.
Please feel free to contact me.
